mathgames

Access Math Games here:


Algebra Math Games
http://www.math-play.com/Algebra-Math-Games.html

Walk the Plank (a pirate game about integers)
http://www.math-play.com/integers-game.html

Some silly games (such as one involving stacking cows):
http://e-learningforkids.org/courses.html#math

Lovely,Lovely Logic Games and Puzzles:
http://www.mathplayground.com/logicgames.html

Coordinate planes:
http://www.math-play.com/coordinate-plane-game.html

Math Games and Puzzles (you can choose the level of challenge)
http://www.coolmath4kids.com/

General Review
http://www.ixl.com/math/grade/sixth/

Sudoku
http://www.sodoku-sodoku.com/

Funbrain
http://www.funbrain.com/brain/MathBrain/MathBrain.html

Not really a game, but this has some pretty good review and practice
http://www.aaaknow.com/grade8.htm